package com.shop.handler;

import cn.hutool.json.JSONUtil;
import com.shop.common.SetMeta;
import org.springframework.security.core.AuthenticationException;
import org.springframework.security.web.authentication.AuthenticationFailureHandler;
import org.springframework.stereotype.Component;

import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.nio.charset.StandardCharsets;

/**
 * 登录失败处理器
 */
@Component
public class LoginFailureHandler implements AuthenticationFailureHandler {
    @Override
    public void onAuthenticationFailure(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, AuthenticationException e) throws IOException, ServletException {
        httpServletResponse.setContentType("application/json;charset=UTF-8");
        ServletOutputStream outputStream = httpServletResponse.getOutputStream();

        SetMeta setMeta = new SetMeta();
        if (e.getMessage().equals("Bad credentials")) {
            setMeta.setError("账号或密码错误");
        } else {
            setMeta.setError(e.getMessage());
        }

        outputStream.write(JSONUtil.toJsonStr(setMeta).getBytes(StandardCharsets.UTF_8));

        outputStream.flush();
        outputStream.close();
    }
}
